WEAKENING
weakening
(adjective) moderating by making pain or sorrow weaker
debilitative, enervating, enfeebling, weakening
(adjective) causing debilitation
weakening
(noun) the act of reducing the strength of something
weakening
(noun) becoming weaker
Source: WordNet® 3.1
Verb
weakening
present participle of weaken
Noun
weakening (countable and uncountable, plural weakenings)
An instance or process of loss of strength.
(uncountable, mathematics) A structural principle of mathematical logic that states that the hypotheses of any derived fact may be freely extended with additional assumptions.
Source: Wiktionary
WEAKEN
Weak"en, v. t. [imp. & p. p. Weakened; p. pr. & vb. n. Weakening.]
1. To make weak; to lessen the strength of; to deprive of strength;
to debilitate; to enfeeble; to enervate; as, to weaken the body or
the mind; to weaken the hands of a magistrate; to weaken the force of
an objection or an argument.
Their hands shall be weakened from the work, that it be not done.
Neh. vi. 9.
2. To reduce in quality, strength, or spirit; as, to weaken tea; to
weaken any solution or decoction.
Weak"en, v. i.
Definition: To become weak or weaker; to lose strength, spirit, or
determination; to become less positive or resolute; as, the patient
weakened; the witness weakened on cross-examination. "His notion
weakens, his discernings are lethargied." Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition